Küschal Champion User Manual - page 32
Champion
9.2 Identifying and repairing faults
Fault
Possible cause
Action
Incorrect tyre pressure on one rear wheel
Correct tyre pressure, → 11.3 Tyres, page 35
The wheelchair does not travel
in a straight line
Bearing block of the front wheel is not in a vertical
position
Put bearing block in a vertical position, → specialist dealer
Front wheels not adjusted to same height
Position the front wheels such that they touch the floor at
the same time, → specialist dealer
One or more spokes broken
Replace faulty spoke(s), → specialist dealer
Spokes tightened unevenly
Tighten loose spokes, → specialist dealer
Front wheel bearings are dirty or damaged
Clean or replace the bearings, → specialist dealer
Rear wheels are off track
Change track, → specialist dealer
Rear wheels are mounted too far forwards
Mount the rear wheels further back, → specialist dealer
The wheelchair tips backwards
too easily
Back angle too large
Reduce the backrest angle, → specialist dealer
Seat angle too large
Use longer vertical struts, → specialist dealer
Incorrect tyre pressure in one or both rear tyres
Correct tyre pressure, → 11.3 Tyres, page 35
The brakes are gripping poorly
or asymmetrically
Brake setting incorrect
Correct the brake setting, → specialist dealer
Tyre pressure in rear tyres is too low
Correct tyre pressure, → 11.3 Tyres, page 35
Rolling resistance is very high
Rear wheels are off track
Change track, → specialist dealer
The front wheels wobble when
moving fast
Too little tension in front wheel bearing block
Tighten the nut on the bearing block axle slightly,
→
specialist dealer
Backrest cover is too tight
Loosen the Velcro bands of the backrest cover a little,
→
3.3 Backrest, page 9
The wheelchair is very difficult
to unfold
Folding mechanism adjusted too hard
Adjust folding mechanism, → specialist dealer
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